11u-7u+4u+u-7=20

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Solution for 11u-7u+4u+u-7=20 equation: 



11u-7u+4u+u-7=20

We move all terms to the left:

11u-7u+4u+u-7-(20)=0

We add all the numbers together, and all the variables

9u-27=0

We move all terms containing u to the left, all other terms to the right

9u=27

u=27/9

u=3

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